Well guys... I got so confused with all these Collection API.. At last I sorted the values by using...
ArrayList alist = new ArrayList(hashmap.values()); Collections.sort(alist); Then with the original map, I am looping through and getting the keys for the sorted values and in the loop I am feeding it to two Object Arrays. One for the Key and one for the Value. Now the two Object Arrays are having the sorted key values. I know this is not efficient way of implementing this solution. But why SUN has not given the hashmap.sortOnKeys() ?? Ok if hashMap takes the null values.. then at least they could have given hashtable.sortOnKeys()...??!!! thanks again for your time. Cheers.. L G Goundalkar. -----Original Message----- From: A mailing list about Java Server Pages specification and reference [mailto:[EMAIL PROTECTED]]On Behalf Of Amit Ghaste Sent: Saturday, November 23, 2002 1:46 AM To: [EMAIL PROTECTED] Subject: FW: Hashtable / HashMap Problem. I wonder why my reply went to the user and not to the list... anyways sorry to send it to uy directly but u can use java.util.LinkedHashMap as shown below Regards Amit -----Original Message----- From: Amit Ghaste [mailto:[EMAIL PROTECTED]] Sent: Friday, November 22, 2002 12:32 AM To: [EMAIL PROTECTED] Subject: RE: Hashtable / HashMap Problem. internally the hashtable stores object refrences according to hashcodes, if u get an enumeration of the stored values or keys, the order is not predictible its the same result with a iterator.... since hashmap is similar to hashtable (except that its meathods are not synched) it will give u the same result to preserve order use the LinkedHashMap... this preserves the order when u retrive it thro the keyset iterator but its meathods are not synchronized... so if u are doing multi threaded operation on shared data u need to synch it get more info from the api if that helps Amit -----Original Message----- From: A mailing list about Java Server Pages specification and reference [mailto:[EMAIL PROTECTED]]On Behalf Of Lakshmeenarayana G G Sent: Thursday, November 21, 2002 8:51 PM To: [EMAIL PROTECTED] Subject: Hashtable / HashMap Problem. Hi, I am using Hashtable or HashMap to keep Key-Value pair of elements. But When I add them, The Hashtable or HashMap gets sorted depending on the keys. I want to retain the order in which I have added the key-value pair. Is there anyway to do it with Hashtable or HashMap ? Or Can I use any other Collection type which will have the mapping of key-value which is not sorted other than two dimensional Array. Thanks for the time. Lakshmeenarayana G G CLI Division - SysArris Software Bangalore - India Tel. No. +91-80-665 4965, 665 5052, 664 2690 Xtn-240 Fax No. +91-80-665 0374, 655 4285 http://www.sysarris.com/ =========================================================================== To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". For digest: mailto [EMAIL PROTECTED] with body: "set JSP-INTEREST DIGEST". Some relevant FAQs on JSP/Servlets can be found at: http://archives.java.sun.com/jsp-interest.html http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.jsp http://www.jguru.com/faq/index.jsp http://www.jspinsider.com =========================================================================== To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". For digest: mailto [EMAIL PROTECTED] with body: "set JSP-INTEREST DIGEST". Some relevant FAQs on JSP/Servlets can be found at: http://archives.java.sun.com/jsp-interest.html http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.jsp http://www.jguru.com/faq/index.jsp http://www.jspinsider.com =========================================================================== To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". For digest: mailto [EMAIL PROTECTED] with body: "set JSP-INTEREST DIGEST". Some relevant FAQs on JSP/Servlets can be found at: http://archives.java.sun.com/jsp-interest.html http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.jsp http://www.jguru.com/faq/index.jsp http://www.jspinsider.com
